121999990
121,999,990 is an even composite number composed of six prime numbers multiplied together.
121999990 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of sixty-four divisors.
Prime factorization of 121999990:
2 × 5 × 7 × 17 × 157 × 653
See below for interesting mathematical facts about the number 121999990 from the Numbermatics database.
Names of 121999990
- Cardinal: 121999990 can be written as One hundred twenty-one million, nine hundred ninety-nine thousand, nine hundred ninety.
Scientific notation
- Scientific notation: 1.2199999 × 108
Factors of 121999990
Divisors of 121999990
- Number of divisors d(n): 64
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Complete list of divisors:
1 2 5 7 10 14 17 34 35 70 85 119 157 170 238 314 595 653 785 1099 1190 1306 1570 2198 2669 3265 4571 5338 5495 6530 9142 10990 11101 13345 18683 22202 22855 26690 37366 45710 55505 77707 93415 102521 111010 155414 186830 205042 388535 512605 717647 777070 1025210 1435294 1742857 3485714 3588235 7176470 8714285 12199999 17428570 24399998 60999995 121999990
- Sum of all divisors σ(n): 267836544
- Sum of proper divisors (its aliquot sum) s(n): 145836554
- 121999990 is an abundant number, because the sum of its proper divisors (145836554) is greater than itself. Its abundance is 23836564
Bases of 121999990
- Binary: 1110100010110010010011101102
- Hexadecimal: 0x7459276
- Base-36: 20MVSM
Squares and roots of 121999990
- 121999990 squared (1219999902) is 14883997560000100
- 121999990 cubed (1219999903) is 1815847553480036599999000
-
The
square root of 121999990 is 11045.3605645085 -
The
cube root of 121999990 is 495.9675528331
Scales and comparisons
How big is 121999990?- 121,999,990 seconds is equal to 3 years, 45 weeks, 5 days, 53 minutes, 10 seconds.
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To count from 1 to 121,999,990 would take you about five years!
This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)
- A cube with a volume of 121999990 cubic inches would be around 41.3 feet tall.
Recreational maths with 121999990
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The information we have on file for 121999990 includes mathematical data and numerical statistics calculated using standard algorithms and methods. We are adding more all the time. If there are any features you would like to see, please contact us. Information provided for educational use, intellectual curiosity and fun!
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